‘Carbon forms backbone of biology of life on earth’, Justify.

I. Carbon forms complex molecules by binding to other elements such as hydrogen, oxygen and nitrogen forming covalent bonds.

II. The examples of formed complex molecules like nucleic acids (DNA and RNA), proteins, enzymes, carbohydrates.

III. Proteins are made of long chains amino acids. Proteins are structural units of living organisms.

IV. Strong cohesion is responsible for most stable biochemical compounds.